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河北省承德县三沟初级中学化学《10.1常见的酸和碱》教材梳理(人教版九年级化学下册)

作者:河北省承德县三沟初级中学  人气: 606 次  时间:2015年04月07日  星级:

河北省承德县三沟初级中学化学《10.1常见的酸和碱》教材梳理(人教版九年级化学下册)

考试要求:
认识常见的酸(盐酸、硫酸)、碱(氢氧化钠、氢氧化钙)的主要化学性质及用途
认识酸碱的腐蚀性,能初步学会稀释常见的酸碱溶液
会用酸碱指示剂检验溶液的酸碱性
考点一、酸碱指示剂
1、概念:指能与酸或碱的溶液起作用而显示不同颜色的物质
2、常用的指示剂:石蕊溶液、酚酞溶液
3、石 蕊溶液、酚酞溶液与酸、碱溶液的反应
 石蕊溶液 酚酞溶液
本  身 紫色 无色
酸溶液 变为红色 无色
碱溶液 变为蓝色 变为红色
考点二、常见的酸
1、浓盐酸、浓硫酸的物理性质、特性、用途


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